Belgium keeper Courtois originally had a £5m clause in his loan deal which Atletico would have to pay if they wanted to play him against Chelsea, but the clubs are now believed to have come to an arrangement.

The stunning Costa deal has been brokered by agent Jorge Mendes, and Atletico will have to pay a big chunk of the £50m fee to a third-party company.

Chelsea want Courtois back for next season after three years on loan at Atletico - Mourinho wants him to compete with Petr Cech to be first choice as Chelsea plan a major shake-up.

Heir we go: Courtois (left) is expected to challenge Cech next season

The west Londoners will also offload their current strike-force.

Italy's Inter Milan are keen on Fernando Torres, although Simeone has also admitted that Atletico could be interested in taking back the 30-year-old - who began his career with them before joining Liverpool in 2007 - as part of the Costa deal.

“Fernando is always with us [in spirit], obviously I have sent messages to him,” said the ex-Argentina midfielder. “He is very happy with everything that is happening to this team and he is always present, wishing us luck.

“Of course he would love to come back to the club he grew up in and where he was happy.”